package com.dl.designmodel.observer;

/**
 * @ProjectName: mcroservices
 * @Author: 86977
 * @Description: ${description}
 * @Date: 2021/6/29 14:23
 * @Version: 1.0
 */
public interface Subject {
  void registerObserver(Observer observer);
  void removeObserver(Observer observer);
  void notifyObservers();

}
